CN111889677A - Ultrasonic impact destressing material increasing device and destressing method - Google Patents
Ultrasonic impact destressing material increasing device and destressing method Download PDFInfo
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- CN111889677A CN111889677A CN202010842427.1A CN202010842427A CN111889677A CN 111889677 A CN111889677 A CN 111889677A CN 202010842427 A CN202010842427 A CN 202010842427A CN 111889677 A CN111889677 A CN 111889677A
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- impact
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- destressing
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- ultrasonic transducer
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- 239000000463 material Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 21
- 230000000996 additive effect Effects 0.000 claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 11
- 230000008018 melting Effects 0.000 claims abstract description 11
- 230000003116 impacting effect Effects 0.000 claims abstract description 4
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000005457 optimization Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses an ultrasonic impact destressing additive device and a destressing method, wherein the additive device comprises a rack and a workbench, a welding head for melting metal wire materials is arranged on the rack, the welding head is positioned above the workbench, an ultrasonic impact destressing mechanism is arranged on one side of the welding head, the ultrasonic impact destressing mechanism comprises an ultrasonic transducer, an amplitude transformer and an impact head, and the impact head is connected with the ultrasonic transducer through the amplitude transformer and used for impacting a product on the workbench to release stress.
Description
Technical Field
The invention relates to the technical field of metal additive manufacturing devices, in particular to an ultrasonic impact destressing additive manufacturing device and a destressing method.
Background
In the field of metal wire material increase, the main technologies comprise modes of electric arc material increase, laser material increase, electron beam material increase and the like, wherein the electric arc material increase and the laser material increase both need large energy input, and gas is ionized to a plasma state to further melt the metal wire, so that the problems of difficult control of energy input, large residual stress, large deformation and the like are caused.
Therefore, stress removal needs to be carried out on the additive product, the existing method mainly comprises pressure rolling stress removal, the method requires that the applied pressure generally exceeds 10 tons, rolling equipment is required to be large in size, strong in rigidity and high in cost, and meanwhile, for parts with complex configurations, rolling wheels cannot effectively roll corners, folding angles and other positions.
Disclosure of Invention
The invention aims to provide an ultrasonic impact destressing additive device and a destressing method.
In order to achieve the purpose, the invention adopts the technical scheme that: the ultrasonic impact destressing additive device comprises a rack and a workbench, wherein a welding head used for melting metal wire materials is arranged on the rack, the welding head is located above the workbench, an ultrasonic impact destressing mechanism is arranged on one side of the welding head, the ultrasonic impact destressing mechanism comprises an ultrasonic transducer, an amplitude transformer and an impact head, and the impact head is connected with the ultrasonic transducer through the amplitude transformer and used for impacting a product on the workbench to release stress.
As a further optimization, a shell is arranged on one side, located on the welding head, of the machine frame, a cavity is formed in the shell, and the ultrasonic transducer is fixed in the cavity.
As a further optimization, a fixing ring is arranged in the cavity, and the ultrasonic transducer is limited by the fixing ring.
As a further optimization, the ultrasonic transducer is an inverted horn transducer.
As a further optimization, the ultrasonic transducer is fixedly connected with the amplitude transformer through a locking bolt.
As a further optimization, the amplitude transformer comprises a column head part and a positioning part, the positioning part is formed at the upper end of the column head part and is installed in the lower part of the ultrasonic transducer through a locking bolt, and the impact head is installed at the lower end of the column head part.
As a further optimization, the positioning part is of a cone frustum-shaped structure, the periphery of the positioning part is provided with a positioning inclined plane, and a positioning abutting surface matched with the positioning inclined plane is arranged in the ultrasonic transducer; the lower end face of the ultrasonic transducer is abutted against the upper end face of the column head.
As a further optimization, a gasket is arranged between the amplitude transformer and the impact head.
As a further optimization, the melting heat source of the welding head is an arc heat source, a laser source or an electron beam source.
The invention also provides a destressing method of the ultrasonic impact destressing additive device, which uses the ultrasonic impact destressing additive device and comprises the following steps,
s1) melting the metal wire by a welding head, and forming a product on a workbench;
s2) the ultrasonic impact stress relief mechanism carries out repeated impact stress relief on the product along the product forming path.
The impact frequency of the ultrasonic transducer is set to be the resonance frequency capable of exciting a metal material product through calculation, the metal surface layer generates large compression plastic deformation through high-frequency impact, the original stress field can be changed, stress can be released to a certain degree, crystal grains are refined, and the problems that residual stress is large, deformation is easy to generate and the like in the metal fuse wire material adding process are solved greatly.
Compared with the prior art, the invention has the following beneficial effects:
the ultrasonic transducer converts electric energy into mechanical energy and amplifies the mechanical energy through the amplitude transformer, and the impact head applies impact force to push the impact head to advance at a high speed; after the impact head impacts a product, energy is transferred to the formed product to eliminate internal stress, the product can be subjected to stress release after being formed, and the traditional static pressure application stress improvement is changed into ultrasonic resonance stress improvement and stress release, so that the equipment cost is reduced, and the processing efficiency is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the connection of the horn and the lock bolt of the present invention.
Fig. 3 is a schematic view of the positioning part of the present invention installed inside the ultrasonic transducer.
In the figure, 1, a frame; 2. a welding head; 20. an arc heat source; 3. a work table; 4. an ultrasonic impact destressing mechanism; 40. a bolt; 41. a housing; 42. an ultrasonic transducer; 421. positioning the abutting surface; 43. an amplitude transformer; 431. a post head; 4311. a horizontal abutting surface; 432. a positioning part; 4321. positioning the inclined plane; 44. an impact head; 45. locking the bolt; 46. a gasket; 47. a fixing ring; 100. and (5) producing the product.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 3, an ultrasonic impact destressing additive device comprises a frame 1 and a workbench 3, wherein a welding head 2 for melting metal wire materials is arranged on the frame 1, the welding head 2 is positioned above the workbench 3, an ultrasonic impact destressing mechanism 4 is arranged on one side of the welding head 2, the ultrasonic impact destressing mechanism 4 comprises an ultrasonic transducer 42, an amplitude transformer 43 and an impact head 44, and the impact head 44 is connected with the ultrasonic transducer 42 through the amplitude transformer 43 and is used for impacting a product 100 on the workbench 3 to release stress.
A shell 41 is arranged on one side of the frame 1, which is positioned on the welding head 2, the shell is fixed on the frame through a bolt 40, a cavity is formed in the shell 41, and an ultrasonic transducer 42 is fixed in the cavity; a fixing ring 47 is arranged in the chamber, and the ultrasonic transducer 42 is limited by the fixing ring 47.
Through casing and solid fixed ring, installation ultrasonic transducer that can stabilize guarantees its job stabilization nature.
The ultrasonic transducer 42 is an inverted horn transducer.
The ultrasonic transducer 42 and the amplitude transformer 43 are fixedly connected through a locking bolt 45, and the locking bolt 45 is a stud bolt, namely, the amplitude transformer and the ultrasonic transducer are fixedly connected through reverse locking.
The horn 43 comprises a column head 431 and a positioning part 432, the positioning part 432 is formed at the upper end of the column head 431, and is installed in the lower part of the ultrasonic transducer 42 through a locking bolt 45, and the impact head 44 is installed at the lower end of the column head 431; the positioning part 432 is a truncated cone-shaped structure, the whole body of the positioning part is provided with a positioning inclined surface 4321, and a positioning abutting surface 421 matched with the positioning inclined surface 4321 is arranged in the ultrasonic transducer 42; the lower end surface of the ultrasonic transducer 42 abuts against the upper end surface of the stub portion 431.
The installation coaxiality of the amplitude transformer and the ultrasonic transducer can be ensured through the matching of the positioning inclined plane and the positioning abutting surface; the upper end surface of the column head part is a horizontal abutting surface 4311, so that the energy of the ultrasonic transducer can be transmitted to the amplitude transformer to the maximum extent, and the energy loss is avoided.
And a gasket 46 is arranged between the amplitude transformer 43 and the impact head 44 to ensure the connection reliability between the amplitude transformer and the impact head.
The melting heat source of the welding head 2 is an arc heat source, a laser source or an electron beam source, and the arc heat source 20 is selected in the present application, but not limited to the metal wire melting form.
The concrete destressing method of the material increasing device comprises the following steps:
melting the metal wire by a welding head, and forming a product on a workbench; the ultrasonic impact destressing mechanism carries out repeated impact destressing on the product along the product forming path.
An ultrasonic transducer in the ultrasonic impact stress-relief mechanism converts input high-frequency high-voltage alternating current into mechanical energy, and the expression form of the ultrasonic impact stress-relief mechanism is that the transducer makes reciprocating telescopic motion in the longitudinal direction, the high-frequency high-voltage alternating current is amplified by an amplitude transformer, impact force is applied to an impact head, and the impact head is pushed to perform high-speed forward impact; after the impact head impacts the product, energy is transferred to the formed product to eliminate internal stress; the impact head rebounds under the reaction of the product, is excited again after encountering the amplitude transformer with high-frequency vibration, collides with the product again at high speed, and repeats the process for many times to complete the impact operation and remove the stress.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The ultrasonic impact destressing additive device is characterized by comprising a rack (1) and a workbench (3), wherein a welding head (2) used for melting metal wire materials is arranged on the rack (1), the welding head (2) is located above the workbench (3), an ultrasonic impact destressing mechanism (4) is arranged on one side of the welding head, the ultrasonic impact destressing mechanism (4) comprises an ultrasonic transducer (42), an amplitude transformer (43) and an impact head (44), and the impact head (44) is connected with the ultrasonic transducer (42) through the amplitude transformer (43) and used for impacting products on the workbench (3) to release stress.
2. The ultrasonic impact destressing additive device according to claim 1, wherein a housing (41) is provided on the frame (1) on a side of the horn (2), a cavity is formed in the housing (41), and the ultrasonic transducer (42) is fixed in the cavity.
3. The ultrasonic impact destressing additive device according to claim 2, wherein a fixing ring (47) is provided in the chamber, and the ultrasonic transducer (42) is retained by the fixing ring (47).
4. The ultrasonic impact distressing additive device according to claim 1, wherein the ultrasonic transducer (42) is an inverted horn transducer.
5. The ultrasonic impact distressing additive device according to claim 1, wherein the ultrasonic transducer (42) and the amplitude transformer (43) are fixedly connected by a locking bolt (45).
6. The ultrasonic impact distressing additive device according to claim 5, wherein the horn (43) comprises a stud head (431) and a positioning part (432), the positioning part (432) is formed at the upper end of the stud head (431) and is installed in the lower part of the ultrasonic transducer (42) through a locking bolt (45), and the impact head (44) is installed at the lower end of the stud head (431).
7. The ultrasonic impact destressing additive device according to claim 6, wherein the positioning portion (432) is a truncated cone structure, the periphery of the positioning portion has a positioning inclined surface (4321), and a positioning abutting surface (421) matched with the positioning inclined surface (4321) is arranged in the ultrasonic transducer (42); the lower end surface of the ultrasonic transducer (42) abuts against the upper end surface of the stud head (431).
8. The ultrasonic impact destressing additive device according to claim 1, wherein a spacer (46) is installed between the horn (43) and the impact head (44).
9. The ultrasonic impact distressing additive device according to claim 1, wherein the melting heat source of the welding head (2) is an arc heat source, a laser source or an electron beam source.
10. A destressing method of an ultrasonic impact destressing additive device, wherein the ultrasonic impact destressing additive device according to any one of claims 1 to 9 is used, comprising the following steps,
s1), melting the metal wire by the welding head (2), and forming a product on the workbench (3);
s2) the ultrasonic impact stress relief mechanism (4) carries out repeated impact stress relief on the product along the product forming path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010842427.1A CN111889677A (en) | 2020-08-20 | 2020-08-20 | Ultrasonic impact destressing material increasing device and destressing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010842427.1A CN111889677A (en) | 2020-08-20 | 2020-08-20 | Ultrasonic impact destressing material increasing device and destressing method |
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| Publication Number | Publication Date |
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| CN111889677A true CN111889677A (en) | 2020-11-06 |
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| CN202010842427.1A Pending CN111889677A (en) | 2020-08-20 | 2020-08-20 | Ultrasonic impact destressing material increasing device and destressing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113411966A (en) * | 2021-05-11 | 2021-09-17 | 武汉市木邦电器有限公司 | Ultrasonic welding system and welding method based on metal wires |
| CN114290668A (en) * | 2021-12-27 | 2022-04-08 | 南京航空航天大学 | Ultrasonic micro-rolling additive manufacturing and forming device and method for continuous fiber composite material |
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2020
- 2020-08-20 CN CN202010842427.1A patent/CN111889677A/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113411966A (en) * | 2021-05-11 | 2021-09-17 | 武汉市木邦电器有限公司 | Ultrasonic welding system and welding method based on metal wires |
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| CN114290668A (en) * | 2021-12-27 | 2022-04-08 | 南京航空航天大学 | Ultrasonic micro-rolling additive manufacturing and forming device and method for continuous fiber composite material |
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